Amazon India — Wrong item was sent by the seller from Amazon

I purchased "Black Soya Bean" from amazon ( packet of 1 Kg) for Rs.299. However, when I open the order, ( after a week of receiving the order) I received a totally different item. Instead of the Black Soya Bean, it was Finger Millets.
It was not only a totally different item but also a different brand.
But my requirement is Black soya Bean, so I raise it for a return and gave the photographic proof of the product I received along with the package cover.

But Amazon denied stating it non-returnable item. They were not ready to contact the seller nor i could contact the seller for the same. Above all the seller has taken down the listing of the particular product and which makes it very difficult to see any more details.

My concern is if Amazon is not taking responsibility for such a misleading seller then who is? It was a total waste of time for a customer to go through all this hassle and Amazon should refund my amount and backlist, such a seller.
I have attached 3 pictures of the product I ordered and 1 picture of what I recieved.